Automatic air-supply device.



. B. n. HATHW AY. KUTOMATIICVAIIR SUPPLY DEVICE.- APPLICATiONHLED sums. ma

Y Patented Mar; 14, 1916.

With-200% BYRON I). HATE-I'WAY, 9F WOOLS'I'QCK, IUWA,

amen- Aeronautic aia-sUrPLY DEVIGE.

Specification of Letters Patent Patented ii far. id, rate.

application filed fieptember 253, 1915. Serial 2%. 52,975.

To all whom it may concern: 7

Be it known that I, BYRON l). HATHWAY, a citizen of the United States, residing at Woolstock, in. the county of right and State of Iowa, have invented certain new and useful Improvements in Automatic Air-SupplyDevices,of which the following is a. specificatlon.

The invention relates to an air supply device, and more particularly to the class of automatic air supply devices for use with internal combustion engines.

The primary object of the invention is the provision of a device of this character, wherein the same can be mounted upon the intake manifold of an internal combustion engine, 'so that air from the atmosphere will be automatically admitted to the manifold prior to the consumption of the mixture in the cylinder of the engine, thereby "increasing the power of the latter, with a minimum consumption of fuel or gas.

Another object of the invention is the provision of a device of this character, wherein the supply of air from the atmosphere can be conveniently regulated at will,

' thereby varying the grade of the mixture,

as the occasion may require.

A further object of the invention is the provision of a device of this character,

' wherein the necessity of any change in the intake manifold of the engine is obviated, and a quantity of air from the atmosphere will be automatically admitted thereby for assuring maximum power.

A still further object of the invention is the provision of a device of this character wherein the construction thereof is novel in form, possessing few parts, thereby assuring accuracy and the perfect working of the same,'while the engine is active.

A still further object of the invention is the provision of a device of this character, which is extremely simple in construction, thoroughly reliable and eiiicient in operation, strong, durable, automatic in action, and inexpensive in manufacture.

With these and other objects in view, the invention consists in the features of construction, combination and arrangement of parts as will be hereinafter fully described, illustrated in the accompanying drawing, and pointed out in the claim hereunto appended.

In the accompanying drawing: Figure 1, is a fragmentary side elevation of an internal combustion engine, showing the device constructed in accordance with the invention applied. Fig. 2, is an enlarged vertical sectional view through the device.

Similarreference characters indicate corresponding parts throughout the several views in the drawing.

Referring to the drawing in detail, A, designates a portion of the ordinary intake manifold, of the usual internal combustion engine,'while B,- designates theautomatic air supply device, hereinafter fully described.

The air supplyfievioe B, comprises a cylinder 5, formed with a rounded top 6, having therein a central air inlet port 7 provided concentrically thereof with a valve seat 8, in which is normally engaged a ball valve 9, for closing the same. The cylinder 5 is preferably of uniform diameter throughout its. length, and-is threaded at its lower end'onto a bottom cap 10, having communication centrally thereof with an elbow 11, integrally formed therewith and terminating in a nipple 12,.adapted to be detachably'tapped into the intake manifold A, leading to the cylinders of the engine.

Arranged interiorly of the cylinder 5, is

a coiled expansion spring 13, one end of which has its bearing upon the cap 10, while the other end supports the ball valve 9, so as to normally hold the same engaged in the seat 8, therefor, and thereby cut oif the supply of air to the cylinders of the engine on the compression strokes of its pistons.

Provided in the elbow 11, is a plug valve 14, which is actuated by hand so that the device can be cut off from the engine, or the quantity of air supply from the atmosphere can be regulated at will. 1

In the operation of the device when the engine'is active and upon the suction stroke of the piston in each cylinder the ball valve 9, is unseated thereby opening the port 7,

and the atmospheric air is drawn into the manifold and delivered to the cylinder of 15, throughout its length, so that the threaded end of thecylinder 5, can be readily adjusted, so as to vary the tension of the spring 13 interiorly thereof. En gaged on the cap 10, is an adjustable lock nut 16, which works against the threaded end of the cylinder 5, to secure the same in its adjusted position upon the cap, and thereby prevent the accidental turning of the cylinder upon the latter. 1

From the foregoing it is thought that the construction and manner of operation of the device will be clearly understood, andtherefore a more extended explanation has been omitted.

Vhat is claimed is An air supply device of the character described, comprising an elbow having an air passage therethrough, and also. having a plug valve- 'shell formed in one branch tllGlQOflrfl. rotatable plug valv'e "mounted in the shell and having an aperture for regis tration with the passage in the elbow, an

externally threaded enlarged terminal formed on one end of the elbow, a lock nut. 25 p terminal and ball valve to normally hold the latter against the seat.

In testimony whereof I affix 'my signature.

BYRON D. HATHWAY. 

